/**
 * Max Yoon Design System - CSS Custom Properties
 * Version 1.0.0
 *
 * Import this file to use design tokens across your projects:
 * @import './design-system/tokens.css';
 */

:root {
  /* ===== COLORS ===== */

  /* Base Colors */
  --color-bg: #0d1117;
  --color-bg-panel: #161b22;
  --color-border: #30363d;
  --color-text: #e6edf3;
  --color-text-muted: #8b949e;
  --color-accent: #c9714a;

  /* Semantic Colors */
  --color-haskell: #5e5086;

  /* ===== TYPOGRAPHY ===== */

  /* Font Families */
  --font-mono: "SF Mono", "Fira Code", "JetBrains Mono", Consolas, monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;

  /* Font Sizes */
  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-base: 1rem;     /* 16px */
  --font-size-lg: 1.125rem;   /* 18px */
  --font-size-xl: 1.25rem;    /* 20px */
  --font-size-2xl: 1.75rem;   /* 28px */
  --font-size-3xl: 2.5rem;    /* 40px */

  /* Font Weights */
  --font-weight-normal: 400;
  --font-weight-semibold: 600;

  /* Line Heights */
  --line-height-normal: 1.6;

  /* Letter Spacing */
  --letter-spacing-tight: -0.02em;
  --letter-spacing-normal: 0.02em;
  --letter-spacing-wide: 0.05em;

  /* ===== SPACING ===== */

  --spacing-xs: 0.125rem;   /* 2px */
  --spacing-sm: 0.25rem;    /* 4px */
  --spacing-md: 0.5rem;     /* 8px */
  --spacing-lg: 0.75rem;    /* 12px */
  --spacing-xl: 1rem;       /* 16px */
  --spacing-2xl: 1.25rem;   /* 20px */
  --spacing-3xl: 1.5rem;    /* 24px */
  --spacing-4xl: 2rem;      /* 32px */
  --spacing-5xl: 4rem;      /* 64px */

  /* ===== BORDERS ===== */

  --border-width-thin: 1px;
  --border-radius-none: 0;

  /* ===== LAYOUT ===== */

  --max-width-container: 1200px;
  --max-width-card: 340px;
  --breakpoint-mobile: 640px;

  /* ===== MOTION ===== */

  --transition-fast: 150ms ease;
  --card-lift: -2px;
}

/* ===== UTILITY CLASSES ===== */

/* Apply base styles */
.font-mono {
  font-family: var(--font-mono);
}

.font-sans {
  font-family: var(--font-sans);
}

/* Text colors */
.text-primary {
  color: var(--color-text);
}

.text-muted {
  color: var(--color-text-muted);
}

.text-accent {
  color: var(--color-accent);
}

/* Background colors */
.bg-primary {
  background: var(--color-bg);
}

.bg-panel {
  background: var(--color-bg-panel);
}

/* Border utilities */
.border {
  border: var(--border-width-thin) solid var(--color-border);
}

.border-accent {
  border: var(--border-width-thin) solid var(--color-accent);
}